Study on Brewster angle thin film polarizer using hafnia-silica mixture as high refractive index material

摘要

Two kinds of hafhia-silica polarizer coatings were prepared by electron beam evaporation, using hafnia-silica mixture (M-POL) and hafhia (POL) as the high refractive index materials, respectively. The spectral performance, surface and interfacial properties, as well as the laser induced damage performance were studied and compared. The M-POL coating shows better performance with broader polarizing bandwidth, lower surface roughness, better interfacial property, while maintaining high laser induced damage threshold.